Type-writing machine



I (No Model.)

H. H. UNZ. TYPE WRITING MACHINE.

No. 449,640. PatentedAMar. 3l, 1891. A

L INVENTOR 'UNITED STATES PATENT I-IENRY II. UNZ, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE NATIONAL TYPE IVRITER COMPANY, OF PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 449,640, dated March 31, 1891.

Original application tiled May 19, 1887, Serial No. 238,7I9.` Divided and this application filed December 7, 1887. Serial No.

. 257,250. (No modeld hiking-ribbon mechanism for type-writing' machines; and it consists, essentially, in operating the inking mechanism from the reciprocating dog-carrying frame of the machin e, and in improved means in attaching the ribbonspool to the machine.

In the drawings which accompanyand form part of this specication, and in which similar letters denote similar parts, Figure 1 represents front view of rear portion of main frame, showing mechanism for driving the ribbonspools. Fig. 2 represents frontI elevation of reciprocating sliding dogcarrying frame. Fig. 3 represents front view of shifting action. Fig. 4 represen ts side elevation of same. Fig. 5 represents end view of portion of pawl-driving device, showing friction-pulley. Fig. G represents central sectional elevation of a ribbon-spool, shaft, and main f rame, showing mechanism for attaching the spool, the shaft, and friction driving-wheel to main frame.

A Aare the inking-ribbon spools.

C represents the driving-wheels for giving movement to the ribbon-spool.

l) is the friction driving-shoe ofthe friction driving-wheel.

Bis the spring-actuated drum by which motion is given to the carriage, ttc., of the type-writer.

e is the shaft upon which the spring-actuated drum revolves.

D represents the reciprocating dog-carrying frame by which the movement of the drum is governed.

cl is the upper dog, and d thelower dog, of the reciprocating dog-earryin g frame, which work into the ratchet-wheel (l2 of the springactuated drum.

E represents the anchor (shown in detail, Fig. 3) by means of which either operatingleverF is disengaged from the reciprocating sliding dog-carrying frame. This anchor is supported by the shaft e of the drum.

rlhis shoe b is pivotally connected with the operating-lever F. The lever F is pivoted at fto the main frame, and its end f rests in a notch fe in the reciprocating dog-carrying frame. The end f'1 of the leverFhas, preferably, a friction-pulley f?, which rests in the notch f2. The left-hand lever-F is shown with a pawl b pivoted to it,'\\1hich pawl works in the ratchet-wheel on the ribbon-spool shaft, (on the left-handside, Fig. 1,) which device can be used together with or in place of the device shown at the right-hand side of the drawings, Fig. 1.

rlhe operation of the reciprocating sliding dog-carrying frame, the dog, and the springactuated drum are all described in a certain application filed'by me arch 14, 1887, Serial No. 230,767.

The operation of my `improved method of actuating the ribbon-spools is as follows: The levers F are normally engaged with the reciprocating sliding dog-carrying frame, and either of said levers is thrown out of operation by means of the anchor E. lVhen the anchor is moved in the direction of the lever havin g the f riction-shoe, the friction-pulleyf 3 on end of Ithe lever F is forced out of engagement with the reciprocating frame, and the shoe Z) is forced up offy of the drivingwheel and takes the position shown in dotted lines, Fig. 1, righthand side. IVhen the anchor is moved in the direction of thelever having the pawl at its end, (left-hand side of Fig. 1,) the pulley f3 on end of the lever F is forced out of engagement with the reciprocating frame, and" the pawl b is forced forward, and the projection b2 of said.pawl strikes the pin b3 on the main frame, which causes the pawl to turn in its pivoted point and rise up oif of the ratchet-Wheel. When the frame D rcciprocates, according as to which lever is engaged, it causes the corresponding friction driving-shoe to act on its corresponding fric- IOO tion driving-wheel, thus causing one of the ribbon-spools to revolve, the friction drivingshoe retaining said spool and preventing it from revolving in the opposite direction. A handle e on the anchor is used for operating the anchor. Ratchet and pawls, as shown in the left side, Fig. l, may be used in place of the friction-wheel and shoes. If ratchet and pawls 'be used, an ordinary holding-ratchet may be used as well as the ordinary drivingratchet, if deemed expedient.

Myinvention also consists in a novel method for removing the ribbon spool and shaft upon which it revolves. Fig. 6 shows the mechanism by which I accomplish this result. X is the main frame of the machine. The ribbon-spool and its shaft are attached to the main frame X in the following manner: The shaft G of the ribbon-spool has its inner end made hollow. A projection g on the main frame fits into this hollow end of shaft G. The friction driving-wheel of the ribbon-spool is fixedly attached to the shaft Gat theinner end of said shaft G. The shaft G is secured to the projection g by the spring-tooth g', which passes through a hole in the hollow portion of the shaft G and into a detent g2 in the projection g. Then the spring-tooth g is elevated, the shaft G, carrying withitthe ribbon-spool and friction driving-wheel, may be removed.

In this specification I have shown mechanism whereby the reciprocat-ion of the reciprocating dog-carrying frame causes the ribbonspools to revolve; but it is obvious that the exact intermediate mechanism maybe modified without departing from my invention, it being only necessary that theintermediate mechanism shall be such that when the dogcarrying frame is reciprocated the said movement of the frame will be transmitted to the the ribbon-spools, causing them to revolve ;V

but I consider the devices shown in this specification as a simple and effective method of accomplishing the result. The device for rendering either of the operating-levers,inactive could also be modified without departing from the invention; but I consider the device shown as a simple and effective vmethod of accomplishing the result. The connection between the levers and the frame might be constant and either of the levers rendered inactive by severing the connection between the lever and its corresponding` spool.

Having now fully described my invention, what I claim, and desire to protect by Letters Patent, is-

l. In combination, alctter-spacing frame, a reci proeatin g dog-carrying frame operated by said letter-spacing frame, ribbon-spools, and intermediate mechanism, substantially as described, between said reciprocating dog-carrying frame and the ribbon-spool, whereby, when the reciprocating frameis operated, one of the ribbon-spools is revolved.

2. In combination, a letter-spacing frame, a reciprocating deg-carrying frame operated by said letter-spacing frame, ribbon-spools, and operating-levers between said ribbon-spools and said reciprocating dog-carrying frame.

3. In combination, a letter-spacing frame, a reciprocating dog-carrying frame operated by said letter-spacing frame, ribbon-spools, operating-levers normally engaged in said frame, and means,substantially as described, to render either of said levers inactive.

4:. In combination,a reciprocating dog-carrying frame, ribbon-spools, friction drivingwheelsconnected with said ribbon-spools,ope1' ating-levers havingdriving-shoes, and means, substantially as described, to render eitherof said operating-levers inactive.

5. In combination, a reciprocating dog-carrying frame, ribbon-spools, friction drivingwheelsconnected with said ribbon-spools,operating-levers having driving-shoes and friction-pulleys at their ends, said pulleys being normally engaged with said frame, and means, substan tially as described, to disengage either of said levers.

G. In combination, a reciprocating dog-carrying-frame, ribbon-spools, operating-levers, and an anchor adapted to l'ender either of said levers inactive.

7. In combination, a ribbon-spool, a shaft with which said spool revolves, said shaft having a hollow end, a projection on the main frame which fits in said shaft, and a removable connection between said projection and shaft.

8. In combination, a ribbon-spool, a shaft with which said spool revolves, said shaft having a hollow end, a `projection on the main frame which fits in said shaft, and a springtooth which passes through the hollow part of said shaft and rests in a detent on the projection.

RICHD. S. CHILD, Jr., BUTLER KENNER HARDING.

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